/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.bpmn.parser;

import com.je.bpm.core.model.BaseElement;
import com.je.bpm.core.model.FlowElement;
import com.je.bpm.engine.parse.BpmnParseHandler;
import com.je.bpm.engine.runtime.DataObject;
import org.slf4j.Logger;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class BpmnParseHandlers {

    private static final Logger LOGGER = org.slf4j.LoggerFactory.getLogger(BpmnParseHandlers.class);

    protected Map<Class<? extends BaseElement>, List<BpmnParseHandler>> parseHandlers;

    public BpmnParseHandlers() {
        this.parseHandlers = new HashMap<Class<? extends BaseElement>, List<BpmnParseHandler>>();
    }

    public List<BpmnParseHandler> getHandlersFor(Class<? extends BaseElement> clazz) {
        return parseHandlers.get(clazz);
    }

    public void addHandlers(List<BpmnParseHandler> bpmnParseHandlers) {
        for (BpmnParseHandler bpmnParseHandler : bpmnParseHandlers) {
            addHandler(bpmnParseHandler);
        }
    }

    public void addHandler(BpmnParseHandler bpmnParseHandler) {
        for (Class<? extends BaseElement> type : bpmnParseHandler.getHandledTypes()) {
            List<BpmnParseHandler> handlers = parseHandlers.get(type);
            if (handlers == null) {
                handlers = new ArrayList<BpmnParseHandler>();
                parseHandlers.put(type, handlers);
            }
            handlers.add(bpmnParseHandler);
        }
    }

    public void parseElement(BpmnParse bpmnParse, BaseElement element) {

        if (element instanceof DataObject) {
            // ignore DataObject elements because they are processed on Process
            // and Sub process level
            return;
        }

        if (element instanceof FlowElement) {
            bpmnParse.setCurrentFlowElement((FlowElement) element);
        }

        // Execute parse handlers
        List<BpmnParseHandler> handlers = parseHandlers.get(element.getClass());

        if (handlers == null) {
            LOGGER.warn("Could not find matching parse handler for + " + element.getId() + " this is likely a bug.");
        } else {
            for (BpmnParseHandler handler : handlers) {
                handler.parse(bpmnParse, element);
            }
        }
    }

}
